Limiting rotating shaft device

Abstract

The utility model discloses a kind of limit rotary shaft devices, including first movable hinge, second movable hinge and rotary shaft assembly, the side of first movable hinge is provided with first connecting part, first connecting part is connected with first gear, the side of second movable hinge is provided with second connecting part, second connecting part is connected with second gear, first gear and second gear all include shaft hole, and the meshing tooth and limiting block of circumferential setting in the outer periphery of shaft hole, each limiting block is connected with first connecting part and second connecting part;First gear and second gear are rotatably sleeved on the rotary shaft assembly by shaft hole, and first gear and second gear are engaged by meshing tooth. Whether the limit rotary shaft device can realize the effective limiting of rotation angle, prevent excessive rotation, protect relevant components, improve the use safety and service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of rotating shaft technology, and in particular to a limiting rotating shaft device. Background Technology

[0002] In various electronic devices, the hinge mechanism is a key structure for enabling the rotational connection of components. Currently, most common hinge mechanisms on the market can only achieve simple rotation functions and lack effective limiting mechanisms, making it difficult to control the rotation angle. This can easily lead to over-rotation, which in turn damages related components and affects the service life and safety of the equipment. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned shortcomings of the prior art and provide a limiting rotating shaft device.

[0004] The objective of this utility model is achieved through the following technical solution: A limiting pivot device includes a first movable hinge, a second movable hinge, and a pivot assembly. A first connecting portion is provided on the side of the first movable hinge, and a first gear is connected to the first connecting portion. A second connecting portion is provided on the side of the second movable hinge, and a second gear is connected to the second connecting portion. Both the first and second gears include a shaft hole, meshing teeth circumferentially disposed around the outer periphery of the shaft hole, and a limiting block. Each limiting block is connected to the first and second connecting portions respectively. The first and second gears are rotatably sleeved on the pivot assembly through the shaft holes, and the first and second gears mesh with each other through the meshing teeth. Furthermore, the limiting block is arc-shaped and disposed on the outer periphery of the shaft hole. The arc-shaped limiting block can achieve a more stable limiting effect during rotation, avoid generating a large impact force at the moment of limiting, reduce the wear of the limiting block, and at the same time make the rotation process smoother and reduce noise; at the same time, the arc angle of the limiting block can be set according to the required rotation angle. Furthermore, the rotating shaft assembly includes a fixed base and a positioning seat connected to the fixed base. A first coupling rod and a second coupling rod are spaced apart on the fixed base. The shaft hole of the first gear is sleeved on the first coupling rod, and the shaft hole of the second gear is sleeved on the second coupling rod and meshes with the first gear. The positioning seat is connected to the fixed base and located above it. The fixed base provides a stable mounting foundation for the first and second coupling rods, while the positioning seat further limits the position of the first and second gears, preventing axial displacement during rotation and ensuring that the first and second gears always maintain a good meshing state, thereby ensuring the normal operation of the limiting rotating shaft device. Furthermore, the positioning seat has a first through hole for the first coupling rod to pass through and a second through hole for the second coupling rod to pass through. The first coupling rod passes through the first through hole and is connected to a first adjusting component, and the second coupling rod passes through the second through hole and is connected to a second adjusting component. The first and second through holes facilitate the connection of the first and second coupling rods through the positioning seat to the first and second adjusting components. The damping force of the first and second gears during rotation can be adjusted through the first and second adjusting components, thereby meeting the requirements of rotation feel in different usage scenarios, and also further improving the stability of the rotating shaft device. Furthermore, both the first and second adjusting components include a first spring washer, a first oil-lubricated washer, a second oil-lubricated washer, and a second spring washer; each of the first spring washer, the first oil-lubricated washer, the second oil-lubricated washer, and the second spring washer is sequentially fitted onto the first and second coupling rods. The spring washer has good elasticity and can provide a certain preload to the oil-lubricated washer, ensuring a tight fit between the oil-lubricated washer and other components, improving sealing performance, and preventing lubricating oil leakage. The oil-lubricated washer can store lubricating oil, continuously providing lubrication to moving parts such as gears and coupling rods during the rotation of the shaft device, reducing friction and wear between components, lowering noise, and extending the service life of the shaft device. Furthermore, the upper ends of the first and second couplings are respectively threaded with positioning nuts that abut against the first and second adjusting components. By tightening the positioning nuts, the first and second adjusting components can be fixed and pressed together, ensuring a tight fit between the various parts of the adjusting components, thereby guaranteeing the stability and reliability of the damping force. At the same time, the positioning nuts also facilitate the disassembly and maintenance of the adjusting components, improving the maintainability of the rotating shaft device. Furthermore, the limiting pivot device also includes a cover, which is connected to the pivot assembly and located above the first gear and the second gear. Two sets of connecting arms are symmetrically arranged on the lower bottom surface of the cover, each connecting arm having a buckle. The fixing seat has a slot that engages with the buckle. Through the engagement of the buckle and the slot, the cover and the fixing seat can be quickly connected and disassembled, making assembly simple and convenient, improving assembly efficiency, and ensuring the stability and reliability of the connection between the cover and the fixing seat, preventing the cover from loosening or falling off during use. The cover can protect the first gear, the second gear, and parts of the pivot assembly structure, improving safety during use. Furthermore, the positioning seat is provided with a mounting post, which has a threaded groove. The upper end face of the cover has a threaded hole, in which a screw is installed. The screw is threadedly connected to the mounting post. A cover plate is also connected to the upper end face of the cover by a screw. The cooperation of the mounting post and the screw further strengthens the connection between the cover and the positioning seat, making the cover more securely fixed. The cover plate can shield the threaded hole and screw on the upper end face of the cover, not only making the appearance of the rotating shaft device neater and more aesthetically pleasing, but also preventing dust, impurities, etc. from entering the interior of the cover through the threaded hole, thus protecting the internal components. Furthermore, both the first and second movable hinges are provided with at least one mounting hole. The mounting holes facilitate the fixing of the first and second movable hinges to the two components that need to be rotatably connected using bolts, screws, or other connecting parts, thereby realizing the rotation and limiting functions between the two components, improving the versatility and applicability of the limiting shaft device, and meeting the installation requirements of different equipment.

[0005] The beneficial effects of this utility model are: This invention provides limiting blocks on the first and second gears. When the first and second movable hinges drive the first and second gears to rotate, the limiting blocks can abut against each other, thereby effectively limiting the rotation angle, preventing excessive rotation, protecting related components, and improving the safety and service life of the equipment. The connection between the components of this limiting shaft device is simple, and assembly is achieved through snap-fit, screw and threaded connection. The assembly process is convenient and efficient, reducing assembly difficulty and production cost, and facilitating large-scale production and application. The oil-filled gaskets in the first and second adjustment components can store lubricating oil, continuously lubricate moving parts, reduce friction and wear between parts, and reduce noise. At the same time, the spring gaskets can improve sealing performance, prevent lubricating oil leakage, and further extend the service life of the shaft assembly. The positioning seat prevents the first and second gears from axially shifting, ensuring good meshing of the gears; the positioning nut fixes and tightens the adjusting components, ensuring stable damping force; the cover protects the internal components and prevents dust and impurities from entering. These structural designs all improve the stability and reliability of the limiting shaft device. The mounting holes on the first and second hinges can meet the installation requirements of different devices, demonstrating strong versatility and applicability. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of the limiting shaft device in this embodiment; Figure 2 for Figure 1 Another structural schematic diagram of the middle limit pivot device; Figure 3 for Figure 1 Exploded view of the middle limit pivot device; Figure 4 for Figure 1 A sectional view of the middle limit pivot device; Figure 5 for Figure 1 A structural diagram of the first movable hinge in the middle; Figure label: 1-First movable hinge, 11-First connecting part, 12-Assembly hole, 2-Second movable hinge, 21-Second connecting part, 3-Spindle assembly, 31-Fixed base, 311-First coupling rod, 312-Second coupling rod, 313-Slot, 32-Positioning seat, 321-First through hole, 322-Second through hole, 323-Mounting post. 4-First gear, 41-Shaft hole, 42-Meshing teeth, 43-Limiting block 5-Second gear, 6-First adjusting assembly, 61-First spring washer, 62-First oil-lubricated washer, 63-Second oil-lubricated washer, 64-Second spring washer, 7-Second adjusting component, 8-Positioning nut 9-Cover body, 91-Connecting arm, 911-Snap fastener, 92-Screw, 93-Cover plate. Detailed Implementation

[0007] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0008] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0009] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. like Figures 1-5 As shown, this utility model embodiment provides a limiting pivot device, including a first movable hinge 1, a second movable hinge 2, and a pivot assembly 3. The first movable hinge 1 has a first connecting portion 11 integrally formed on its side, and a first gear 4 is fixedly connected to the first connecting portion 11; the second movable hinge 2 has a second connecting portion 21 integrally formed on its side, and a second gear 5 is also fixedly connected to the second connecting portion 21.

[0011] like Figure 5 As shown, the first gear 4 and the second gear 5 have the same structure, both including a shaft hole, meshing teeth circumferentially disposed on the outer periphery of the shaft hole, and limiting blocks. The limiting blocks are arc-shaped and disposed on the outer periphery of the shaft hole, and each limiting block is fixedly connected to the first connecting part 11 and the second connecting part 21 respectively. The first gear 4 and the second gear 5 are rotatably sleeved on the rotating shaft assembly 3 through the shaft hole, and the meshing teeth 42 of the first gear 4 mesh with the meshing teeth of the second gear 5. like Figure 3 As shown, the rotating shaft assembly 3 includes a fixed base 31 and a positioning seat 32 connected to the fixed base 31 by bolts. The fixed base 31 has a first coupling rod 311 and a second coupling rod 312 integrally formed at a distance. The shaft hole 41 of the first gear 4 is sleeved on the first coupling rod 311, and the shaft hole of the second gear 5 is sleeved on the second coupling rod 312. The second gear 5 meshes with the first gear 4. The positioning seat 32 is connected to the fixed base 31 and is located above the fixed base 31. The positioning seat 32 has a first through hole 321 for the first coupling rod 311 to pass through and a second through hole 322 for the second coupling rod 312 to pass through. The first coupling rod 311 passes through the first through hole 321 and is connected to the first adjusting component 6. The second coupling rod 312 passes through the second through hole 322 and is connected to the second adjusting component 7. The first adjusting component 6 and the second adjusting component 7 have the same structure, both including a first spring washer 61, a first oil-absorbing washer 62, a second oil-absorbing washer 63, and a second spring washer 64. Each of the first spring washer 61, the first oil-absorbing washer 62, the second oil-absorbing washer 63, and the second spring washer 64 is sequentially sleeved on the first coupling rod 311 and the second coupling rod 312. The upper ends of the first coupling rod 311 and the second coupling rod 312 are both provided with external threads, and are respectively threaded with positioning nuts 8 that abut against the first adjusting component 6 and the second adjusting component 7. By tightening the positioning nuts 8, the first adjusting component 6 and the second adjusting component 7 can be pressed and fixed. The limiting pivot device also includes a cover 9, which is connected to the pivot assembly 3 and located above the first gear 4 and the second gear 5. The bottom surface of the cover 9 has two sets of connecting arms 91 integrally formed symmetrically. Each connecting arm 91 has a buckle 911 integrally formed on it. The fixing seat 31 has a slot 313 that cooperates with the buckle 911. The cover 9 and the fixing seat 31 are initially connected by the buckle 911 being engaged in the slot 313. The positioning base 32 has an integrally formed mounting post 323 with a threaded groove. The upper end face of the cover 9 has a threaded hole 92, into which a screw 92 is installed. The screw 92 is threaded into the threaded groove of the mounting post 323, further strengthening the connection between the cover 9 and the positioning base 32. A cover plate 93 is also connected to the upper end face of the cover 9 via screws 92. The cover plate 93 covers the threaded hole 92 and the screw 92. The cover 9 protects the normal operation of the internal components; the cover plate 93 makes the device look cleaner and further prevents dust from entering. The first movable hinge 1 and the second movable hinge 2 are each provided with a plurality of mounting holes 12, which can be used to fix the first movable hinge 1 and the second movable hinge 2 to two external components that need to be rotated and connected, respectively. When using this limiting pivot device, the relative rotation of the two external components will cause the first movable hinge 1 and the second movable hinge 2 to rotate, which in turn will cause the first gear 4 and the second gear 5 to rotate around the first coupling rod 311 and the second coupling rod 312 respectively. Since the first gear 4 and the second gear 5 mesh with each other and both are equipped with limiting blocks, when the rotation reaches a certain angle, the limiting block 43 of the first gear 4 and the limiting block of the second gear 5 abut against each other, thereby limiting further rotation and realizing the limiting function. During rotation, the first oil-lubricating gasket 62 and the second oil-lubricating gasket 63 in the first adjusting assembly 6 and the second adjusting assembly 7 can release the stored lubricating oil to lubricate the shaft holes of the first coupling rod 311, the second coupling rod 312, the first gear 4, and the second gear 5, reducing friction and wear. The first spring gasket 61 and the second spring gasket 64 can provide preload to ensure the oil-lubricating gasket fits tightly with other components and prevent lubricating oil leakage. When it is necessary to adjust the rotational damping force, simply loosen or tighten the positioning nut 8 to change the pressure on the first adjusting component 6 and the second adjusting component 7, and the damping force can be adjusted to meet different usage requirements.

[0012] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A limiting rotating shaft device, characterized in that: The assembly includes a first movable hinge, a second movable hinge, and a pivot assembly. The first movable hinge has a first connecting portion on its side, and a first gear is connected to the first connecting portion. The second movable hinge has a second connecting portion on its side, and a second gear is connected to the second connecting portion. Both the first and second gears include a shaft hole, meshing teeth circumferentially disposed on the outer periphery of the shaft hole, and a limiting block. Each limiting block is connected to the first and second connecting portions respectively. The first and second gears are rotatably sleeved on the pivot assembly through the shaft hole, and the first and second gears mesh with each other through the meshing teeth.

2. The limiting rotating shaft device according to claim 1, characterized in that: The limiting block is arranged in an arc shape on the outer periphery of the shaft hole.

3. The limiting rotating shaft device according to claim 1, characterized in that: The rotating shaft assembly includes a fixed base and a positioning seat connected to the fixed base. A first coupling rod and a second coupling rod are spaced apart on the fixed base. The shaft hole of the first gear is sleeved on the first coupling rod, and the shaft hole of the second gear is sleeved on the second coupling rod and meshes with the first gear. The positioning seat is connected to the fixed base and is located above the fixed base.

4. The limiting rotating shaft device according to claim 3, characterized in that: The positioning seat has a first through hole for the first coupling rod to pass through and a second through hole for the second coupling rod to pass through. The first coupling rod passes through the first through hole and is connected to a first adjusting component, and the second coupling rod passes through the second through hole and is connected to a second adjusting component.

5. The limiting rotating shaft device according to claim 4, characterized in that: Both the first adjustment component and the second adjustment component include a first spring washer, a first oil-impregnated washer, a second oil-impregnated washer, and a second spring washer; Each of the first spring washer, the first oil-lubricating washer, the second oil-lubricating washer, and the second spring washer is sequentially sleeved on the first coupling rod and the second coupling rod.

6. The limiting rotating shaft device according to claim 4, characterized in that: The upper ends of the first coupling rod and the second coupling rod are respectively threaded with positioning nuts that abut against the first adjusting component and the second adjusting component.

7. The limiting rotating shaft device according to claim 3, characterized in that: It also includes a cover, which is connected to the shaft assembly and located above the first gear and the second gear.

8. The limiting rotating shaft device according to claim 7, characterized in that: The bottom surface of the cover is symmetrically provided with two sets of connecting arms, each of which is provided with a buckle, and the fixing seat is provided with a slot that cooperates with the buckle.

9. The limiting rotating shaft device according to claim 7, characterized in that: The positioning seat is provided with a mounting post, the mounting post is provided with a threaded groove, the upper end face of the cover is provided with a threaded hole, a screw is installed in the threaded hole, and the screw is threadedly connected to the mounting post. The upper surface of the cover is also connected to a cover plate by screws.

10. The limiting rotating shaft device according to claim 1, characterized in that: Both the first and second movable hinges are provided with at least one mounting hole.

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